1 Ligand-Free Sub-Nanometer Metal Clusters in Catalysis
25
Fig. 1.24 Possible products
in the hydrosilylation of
terminal alkynes (top) and
reaction scope for the Pt 3
clusters-catalyzed
α– hydrosilylation:
0.005 mol% (50 ppm) of
Kardstedt’s catalyst (with
respect to the alkyne) at
110 °C in toluene (0.5 M),
GC yields, isolated yields of
α isomer between
parenthesis, and α/β ratio of
the mixture, before isolation
and calculated by GC–MS
and 1 H NMR, between
brackets, a 5–gram scale, b
NMR yield, c Ratio
(αα)/(αβ)/(ββ) = 43/47/10
(bottom, Fig. adapted from
Ref. [59]. Copyright © 2017
by John Wiley & Sons, Inc.)